net: fix USB network driver config option.

It must be tristate to avoid broken dependencies with kernel built-in
usb network drivers when usb support is module only.

When net config option is set, least surprize default should match usb.

Wireless RNDIS USB driver used to select USB_USBNET. USB_USBNET now
depends on USB_NET_DRIVERS so the latter should be selected as well.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index 9f194a0bef7c..37eed4d84e9c 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -5,8 +5,8 @@ comment "Host-side USB support is needed for USB Network Adapter support"
         depends on !USB && NET
 
 menuconfig USB_NET_DRIVERS
-        bool "USB Network Adapters"
-        default y
+        tristate "USB Network Adapters"
+        default USB if USB
         depends on USB && NET
 
 if USB_NET_DRIVERS
diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index b2137e8f7ca6..16604bdf5197 100644
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -189,6 +189,7 @@ config USB_NET_RNDIS_WLAN
         tristate "Wireless RNDIS USB support"
         depends on USB
         depends on CFG80211
+        select USB_NET_DRIVERS
         select USB_USBNET
         select USB_NET_CDCETHER
         select USB_NET_RNDIS_HOST